Embodiment
Below, utilize diagram to describe example of the present invention in detail.
Fig. 1 (a) and Fig. 1 (b) are the synoptic diagram of the pixel of explanation liquid crystal panel of the present invention.Fig. 1 (b) is the synoptic diagram of liquid crystal panel of the present invention, makes the aperture area of pixel P1, P2 different in order to carry out the colourity adjustment.Fig. 1 (a) is the synoptic diagram that does not carry out the liquid crystal panel colourity adjustment, that be used for comparison, and the aperture area of whole pixel P equates.
Here, in the planimetric map of the display surface of liquid crystal panel, pixel is generally considered to be the least unit zone of brightness-adjusting.Each pixel is for example set painted areas by color filter (CF), shows predetermined demonstration look respectively, arbitrary demonstration look of for example red (R), green (G), blue (B) and blue or green (C).In addition, by the colored unit that shows usefulness of aggregate formation of contiguous above-mentioned pixel of all kinds, this aggregate is also referred to as pixel (pixel).At this moment, the above-mentioned pixel of the least unit that changes as brightness is also sometimes referred to as sub-pixel (sub pixel).
Exemplary structure as described later, the peristome of each pixel can be by black matrix (photomask) isotactic fixed wheel exterior feature, size etc.In the centreline space zone of a plurality of drain electrode distributions on being arranged at array substrate described later (to call the wiring closet zone in the following text), the drain electrode distribution bearing of trend dispose a plurality of pixels side by side.The a plurality of pixels that are configured in side by side in the wiring closet zone are to be separated by differentiations such as black matrixes.That is, each wiring closet zone be the drain electrode distribution bearing of trend be divided into a plurality of zones, be provided with pixel in each zone.Here, this zone is called the pixel arrangement zone.The pixel arrangement zone be in the viewing area of liquid crystal panel, be defined as for example rectangular, this moment pixel be configured to rectangular.
In this pixel arrangement zone, except the configuration section of black matrix and be present in the configuration section of light-proofness element in the pixel (for example TFT, keep electric capacity, distribution etc.), rest parts becomes the peristome of pixel.The area of this peristome is exactly the pixel openings area.
Shown in Fig. 1 (a), in the liquid crystal panel of usefulness relatively, the structure of each pixel P is identical.Its illustration, the peristome of pixel P compares, is that pixel aperture ratio is 60% situation with respect to the area in pixel arrangement zone.At this moment, the aperture opening ratio of liquid crystal panel integral body (panel aperture opening ratio) also is roughly 60%.
With respect to this, shown in Fig. 1 (b), the pixel P2 of liquid crystal panel of the present invention has the structure that makes a part that is present in the light-proofness element in the above-mentioned pixel P move to adjacent pixels.Thus, to compare with pixel P and can make the pixel openings area be that pixel aperture ratio increases to pixel P2.On the other hand, pixel P1 is set to the predetermined pixel that shows look, and this predetermined pixel P1 that shows look is set in order to carry out the colourity adjustment, and comparing with pixel P2 and can making the pixel openings area is that pixel aperture ratio reduces.For reducing pixel openings area, and utilize the part of the above-mentioned light-proofness element that appends at pixel P1.
Here, above-mentioned pixel P1 through setting compares with pixel P2, show and comprise the pixel of intensity than the long demonstration of high-amplitude wave look, undertaken in the situation of the colored liquid crystal panel that shows by for example 4 looks of red (R), green (G), blue (B) and blue or green (C), the demonstration look of pixel P1 is green or blue or green, and the demonstration look of pixel P2 is blue or red.Carry out the adjustment of colourity thus.
For example, in order to carry out the colourity adjustment, the pixel openings area of pixel P1 is set at a half of the pixel openings area of pixel P2, be arranged at pixel P1 by being present in 20% of light-proofness element in the pixel P, can be respectively the pixel aperture ratio of pixel P2 and pixel P1 be made as 80% and 40%.According to this example, (with reference to Figure 18 (b)) compares with existing colourity method of adjustment, can learn that the aperture area of pixel P2 can increase, and along with the increase of the aperture area of pixel P2, the decrease of the aperture area of pixel P1 can be in more among a small circle.
Moreover according to above-mentioned example, the panel aperture opening ratio is 60%, with the liquid crystal panel identical (with reference to Fig. 1 (a)) that does not carry out the colourity adjustment.That is,, the brightness of liquid crystal panel integral body is reduced, can carry out the colourity adjustment according to liquid crystal panel of the present invention.Perhaps, compare, also can promote the brightness of liquid crystal panel integral body with existing colourity method of adjustment.
Fig. 2 is explanation liquid crystal panel of the present invention example, and the cut-open view of the array substrate 32T of TN mode liquid crystal panel 30T, Fig. 3 to Fig. 5 are the planimetric maps (arrangement plan) of four pixel parts of the viewing area of explanation liquid crystal panel 30T.Fig. 2 is the cut-open view of the 2-2 line among Fig. 3.
Liquid crystal panel 30T has, and accompanies the structure of not shown liquid crystal between the array substrate 32T of subtend configuration and not shown subtend substrate.In liquid crystal panel 30T, the electric field between the pixel electrode 52 by array substrate 32T and the not shown common electrode of subtend substrate, the orientation state of control liquid crystal, and adjust the brightness of pixel.Liquid crystal panel 30T is not only applicable to the TN pattern, and is applicable in VA (Vertical Alignment vertical orientation) pattern, ECB (birefringence of Electricallycontrollable birefringence electric field controls) pattern etc. yet.
The cross-section structure of array substrate 32T at first, is described with reference to Fig. 2.
Array substrate 32T is by light transmissive substrate 34, semiconductor layer 36, gate insulating film 38, grid distribution 40, keeps capacitance wiring 42, interlayer dielectric 44, drain electrode distribution 46, source electrode 48, planarization film 50 and pixel electrode 52 to be constituted.
Light transmissive substrate 34 is made of for example glass.Semiconductor layer 36 is made of for example polysilicon, and is configured on the light transmissive substrate 34.Gate insulating film 38 is to be made of for example institute such as monox, silicon nitride, covers semiconductor layer 36, and is configured on the light transmissive substrate 34.Grid distribution 40 is made of for example metal such as molybdenum Mo, aluminium Al.Grid distribution 40 is to be relative to the configuration on gate insulating film 38 with semiconductor layer 36, and together constitutes pixel TFT 70 with gate insulating film 38 and semiconductor layer 36.The grid distribution is also referred to as sweep trace.Keeping capacitance wiring 42 is by for example being constituted with grid distribution 40 identical materials.Keep capacitance wiring 42 be relative with semiconductor layer 36 to and be configured on the gate insulating film 38, together constitutes maintenance electric capacity 72 with gate insulating film 38 and semiconductor layer 36.
Interlayer dielectric 44 is to be made of for example institute such as monox, silicon nitride, covering gate distribution 40 and maintenance capacitance wiring 42, and be configured on the gate insulating film 38.Connect interlayer dielectric 44 and be provided with contact hole with gate insulating film 38.This contact hole is arranged in the semiconductor layer 36, is connected to the source electrode of pixel TFT 70 and the position of drain electrode respectively.Drain electrode distribution 46 is made of for example metals such as molybdenum Mo, aluminium Al, antimony Ti.Drain electrode distribution 46 is configured on the interlayer dielectric 44, and is connected semiconductor layer 36 by the above-mentioned contact hole of a side.In addition, the drain electrode distribution is also referred to as signal wire.Source electrode 48 is by for example being constituted with drain electrode distribution 46 identical materials.Source electrode 48 is configured on the interlayer dielectric 44, and is connected semiconductor layer 36 by the above-mentioned contact hole of opposite side.
Here, in semiconductor layer 36, the part that is connected with drain electrode distribution 46 is made as the drain electrode of pixel TFT 70, will be made as the source electrode of pixel TFT 70, but also can call source electrode and drain electrode on the contrary with above-mentioned by the part that source electrode 48 is connected with pixel electrode 52.Keep electric capacity 72 to be connected in order to make with the source electrode of pixel TFT 70, the source side of semiconductor layer 36 make maintenance capacitance wiring 42 and semiconductor layer 36 relative to.
Planarization film 50 is to be made of institutes such as insulativity transparent resin such as for example acrylic acid, covers drain electrode distribution 46 and source electrode 48, and is configured on the interlayer dielectric 44.Connect planarization film 50 and be provided with contact hole to source electrode 48.Pixel electrode 52 is made of for example ITO transparent conductive materials such as (indium tinoxide tin indium oxides), and pixel electrode 52 is to be configured on the planarization film 50, and is connected source electrode 48 by above-mentioned contact hole.
By above structure, in liquid crystal panel 30T, be connected with drain electrode distribution 46 and pixel electrode 52 by pixel TFT 70 and source electrode 48 electrical (with circuit mode); By pixel TFT 70, drain electrode distribution 46 is connected with keeping electric capacity 72 electrical (with circuit mode).Therefore, the current potential that is applied to drain electrode distribution 46 is to be applied to pixel electrode 52 and to keep electric capacity 72 by pixel TFT 70.
Then, with reference to Fig. 3 to Fig. 5, the planar structure (configuration) of four pixel parts of the viewing area of liquid crystal panel 30T is described.For easy understanding, Fig. 3 is a state of representing to remove from Fig. 4 pixel electrode 52, and Fig. 4 is that expression is removed the state of deceiving matrix 62 from Fig. 5, omits light transmissive substrate 34 etc. among Fig. 3 to Fig. 5.In addition, with thick dot-and-dash line remarked pixel electrode 52, represent black matrix 62 with blacking among Fig. 5 among Fig. 4, the kind of described line and blacking are with so that diagram is easier to understanding.
In liquid crystal panel 30T, many drain electrode distributions 46 are to extend (being to extend along longitudinal direction in the illustrated example) with linearity respectively.Many drain electrode distributions 46 are to be arranged in the direction of intersecting with bearing of trend (being perpendicular direction, is transverse direction in the illustrated example) here, and alignment arrangements in parallel to each other.Here illustration is in many drain electrode distribution 46 integral body, the identical situation of arrangement pitches of each distribution 46 that drains.And the width of each distribution 46 that drains (size of the orientation of this distribution 48) also is made as identical.In addition, Biao Shi drain electrode distribution 46 is the situation of linearity in the drawings, but but also for example the part have bend but whole extend towards above-mentioned bearing of trend.In addition, pixel is arranged and also can be formed striated arrangement, triangle assortment, mosaic arrangement etc.
A plurality of pixel arrangement zone 46B is defined in the orientation of drain electrode distribution 46 by many drain electrode distributions 46.Dispose two pixel TFT 70 that pixel P1, P2 use for described a plurality of pixel arrangement zone 46B every one.Promptly, it is the orientation that is arranged alternately in drain electrode distribution 46 mutually that the pixel arrangement zone 46B that disposes pixel TFT 70 reaches the pixel arrangement zone 46B that does not dispose pixel TFT 70, disposes two pixel TFT 70 in disposing the pixel arrangement zone 46B of pixel TFT 70.Moreover, be arranged in all pixel arrangement zone 46B of the bearing of trend of drain electrode distribution 46, might not be the pixel arrangement zone 46B that does not dispose pixel TFT 70.For example, disposing the pixel arrangement zone 46B and the pixel arrangement zone 46B that does not dispose pixel TFT 70 of pixel TFT 70, also can be the bearing of trend that is arranged alternately in drain electrode distribution 46 mutually.
In illustrated example, about each pixel TFT 70, semiconductor layer 36 is to be class U font to extend (such U font is to reverse up and down among the figure), and grid distribution 40 is that two wrists of such U font of crosscut are towards the orientation of drain electrode distribution 46, the direction extension that promptly intersects with drain electrode distribution 46.In this structure, the source electrode of each pixel TFT 70 and drain electrode be the position with grid distribution 40 same side (i.e. a side).Thus, pixel TFT 70 is to have grid distribution 40 to intersect twice structure with semiconductor layer 36 between source electrode and drain electrode, promptly has at the source electrode of semiconductor layer 36 and is provided with the structure of two gate electrodes between draining.Grid distribution 40 is to be co-located on above-mentioned two pixel TFT 70.And, the source electrode of the pixel TFT 70 that pixel P1 uses and drain electrode, and the source electrode and the drain electrode of the pixel TFT 70 used of pixel P2 be to be arranged on a side with respect to grid distribution 40.
Moreover, in the drawings about the example of above-mentioned two pixel TFT 70, the semiconductor layer 36 of the pixel TFT 70 of one side (being the left side in the drawings) overlaps its part and disposes at drain electrode distribution 46, and the semiconductor layer 36 of the pixel TFT 70 of opposite side (being the right side in the drawings) is to dispose in the mode that is not overlapped in drain electrode distribution 46.But the mode that also can overlap or not be overlapped in drain electrode distribution 46 disposes two sides' semiconductor layer 36.
Above-mentioned two pixel TFT 70 are the orientations that are arranged in drain electrode distribution 46 in the 46B of pixel arrangement zone.In above-mentioned two pixel TFT 70 each, its source electrode are arranged on the close centre of pixel arrangement zone 46B, and drain electrode is arranged on drain electrode distribution 46 sides.Drain electrode is connected to nearest drain electrode distribution 46, thereby makes two pixel TFT 70 be connected to drain electrode distribution 46.That is, the pixel TFT 70 that pixel P2 uses is connected the drain electrode distribution 46 that extends between pixel P1, P2, and the pixel TFT 70 that pixel P1 uses is the drain electrode distributions 46 that are connected the next door of above-mentioned drain electrode distribution 46.Source electrode is connected pixel electrode 52 by source electrode 48 respectively, and is connected maintenance electric capacity 72.The pixel electrode 52 that is connected to each pixel TFT 70 is not in contact with one another with keeping electric capacity 72.
The pixel electrode 52 that is connected in a side (left side among the figure) pixel TFT 70 is that integral body is arranged in the pixel arrangement zone 46B that disposes above-mentioned two pixel TFT 70.And, in diagram, be the situation that the edge of this pixel electrode 52 of illustration does not overlap with drain electrode distribution 46, but the size that the distribution 46 that also can be made as and drain overlaps.
The pixel electrode 52 that is connected in opposite side (right side among the figure) pixel TFT 70 is in disposing the pixel arrangement zone 46B of above-mentioned two pixel TFT 70, is connected in the pixel TFT 70 of this opposite side.That is, two pixel electrodes 52 that pixel P1 uses and pixel P2 uses are with respect to draining distribution 46 in pixel P1 side, being connected to corresponding pixel TFT 70.The pixel electrode 52 that is connected in above-mentioned opposite side pixel TFT 70 is to cross the drain electrode distribution 46 that this opposing party connects pixel TFT 70, arrive pixel adjacent configuring area 46B (not disposing the pixel arrangement zone 46B of above-mentioned pixel TFT 70), and extend in this pixel adjacent configuring area 46B.That is, this pixel electrode 52 is to be class L font (the L font for reversing up and down among the figure).Moreover, at the pixel electrode 52 of L font, the part in not disposing the pixel arrangement zone 46B of pixel TFT 70 is to compare with the pixel electrodes 52 in the pixel arrangement zone 46B that disposes two pixel TFT 70, bearing of trend at drain electrode distribution 46 is longer, and is therefore comparatively broad.In addition in the drawings, be illustration except the part of crossing drain electrode distribution 46, the edge of the pixel electrode 52 of class L font is not overlapped in the situation of drain electrode distribution 46, but the size that the distribution 46 that also can be made as and drain overlaps.
In disposing the pixel arrangement zone 46B of two pixel TFT 70, above-mentioned two maintenance electric capacity 72 that the orientation alignment arrangements of edge drain electrode distribution 46 has pixel P1, P2 to use.Keeping electric capacity 72 is alignment arrangements bearing of trends at pixel TFT 70 and drain electrode distribution 46.As mentioned above, be connected with the pixel P1 that keeps electric capacity 72, the source electrode that P2 uses is to be arranged on a side with respect to grid distribution 40, so the maintenance electric capacity 72 that pixel P1, P2 use also is to be arranged on a side with respect to grid distribution 40.
Black matrix 62 is that the laminated film by for example chromium and chromium oxide is constituted, and is arranged on the subtend substrate.Black matrix 62 is arranged between the pixel adjacent electrode 52, and is provided with peristome 62P1 or peristome 62P2 corresponding to each pixel arrangement zone 46B.At this moment, black matrix 62 is to be overlapped in the distribution 46 and along each drain electrode distribution 46 and be provided with of respectively draining.One side's peristome 62P1 is arranged on the pixel arrangement zone 46B that disposes above-mentioned two pixel TFT 70 corresponding to pixel electrode 52, and the profile of determined pixel P1.The opposing party's peristome 62P2 is arranged on the pixel arrangement zone 46B that does not dispose above-mentioned two pixel TFT 70 corresponding to pixel electrode 52, and the profile of determined pixel P2.In liquid crystal panel 30T, black matrix 62 also is arranged on the part in the pixel arrangement zone 46B that disposes above-mentioned two pixel TFT 70 in the pixel electrode 52 of above-mentioned two pixel TFT 70 and class L font, so peristome P2, and promptly pixel P2 is bigger.
Drain electrode distribution 46, grid distribution 40, keep capacitance wiring 42, and source electrode 48 be to have light-proofness with Specifications ground with black matrix, also can with the black matrix peristome of determined pixel together.
About liquid crystal panel 30T, when with pixel TFT 70 and when keeping electric capacity 72 to be commonly referred to as pixel components portion, the pixel components portion that pixel P2 uses is the pixel components portion that uses with pixel P1, together is arranged on the pixel arrangement zone 46B that disposes pixel P1.That is, the pixel components portion of pixel P2 is configured in pixel P1 side with respect to drain electrode distribution 46 (is benchmark with this distribution 46), and is not configured in pixel P2 side.Therefore, the pixel components portion that uses of pixel P2 can't carry out shading to pixel P2.To pixel P2 (being peristome 62P2) carry out shading only in illustrated example, the grid distribution 40 that overlaps with this pixel P2 and keep capacitance wiring 42.Therefore, the aperture area of pixel P2 is wider than pixel P1, and compares with existing liquid crystal panel 130T and to increase to some extent.
When with predetermined ratio the aperture area of the open area ratio pixel P2 of pixel P1 being reduced in order to carry out colourity adjustment etc. more, because liquid crystal panel 30T, the aperture area of pixel P2 can increase as mentioned above.Therefore, (with reference to Figure 18 (b)) compares with existing colourity method of adjustment, and the decrease of the aperture area of pixel P1 can be in more among a small circle.Therefore, the brightness of liquid crystal panel integral body is reduced, can carry out colourity adjustment etc.Perhaps, compare, also can promote the brightness of liquid crystal panel integral body with existing colourity method of adjustment.
Fig. 6 is the cut-open view of array substrate 32F of the FFS mode liquid crystal panel 30F of explanation another example of liquid crystal panel of the present invention.Fig. 7 to Figure 10 is the planimetric map (arrangement plan) of four pixel parts of the viewing area of explanation liquid crystal panel 30F.Fig. 6 is the cut-open view of the 6-6 line among Fig. 7.
Liquid crystal panel 30F has the structure that accompanies not shown liquid crystal between the array substrate 32F of subtend configuration and not shown subtend substrate.In liquid crystal panel 30F, by the pixel electrode 52 of array substrate 32F and the electric field between the common electrode 60, the orientation state of control liquid crystal, and the brightness of adjustment pixel.
The cross-section structure of array substrate 32F at first, is described with reference to Fig. 6.
Array substrate 32F possesses following structure: remove maintenance capacitance wiring 42 (promptly keeping electric capacity 72) and above-mentioned array substrate 32T is appended common electrode distribution 54, common electrode repeater electrode 56, FFS dielectric film 58, common electrode 60 from array substrate 32T (with reference to Fig. 2).
Common electrode distribution 54 is by for example being constituted with grid distribution 40 identical materials, and is configured on the gate insulating film 38, is covered by interlayer dielectric 44.Be provided with the contact hole that arrives common electrode distribution 54 at interlayer dielectric 44.Common electrode is by for example being constituted with drain electrode distribution 46 identical materials with repeater electrode 56.Common electrode is to be configured on the interlayer dielectric 44 with repeater electrode 56, and is connected common electrode distribution 54 by contact hole.
FFS dielectric film 58 is to be made of institutes such as for example silicon nitrides, covers pixel electrode 52 and is configured on the planarization film 50.Be provided with the contact hole of arrival common electrode at planarization film 50 with repeater electrode 56.The sidewall of this contact hole is provided with FFS dielectric film 58.Common electrode 60 is made of for example ITO transparent conductive materials such as (tin indium oxides).Common electrode 60 is configured on the FFS dielectric film 58 and by above-mentioned contact hole and is connected common electrode repeater electrode 56.Common electrode 60 is by FFS dielectric film 58, relative with pixel electrode 52 to and be provided with, and have a plurality of cracking in part with pixel electrode 52 subtends.By between pixel electrode 52 and common electrode 60 by this electric field that cracks and produce, the orientation state of control liquid crystal.
Then, with reference to Fig. 7 to Figure 10, the planar structure (configuration) of four pixel parts of the viewing area of liquid crystal panel 30F is described.For easy understanding, Fig. 7 is a state of representing to remove from Fig. 8 pixel electrode 52, and Fig. 8 is a state of representing to remove from Fig. 9 common electrode 60, and Fig. 9 is that expression is removed the state of deceiving matrix 62 from Figure 10, omits light transmissive substrate 34 etc. among Fig. 7 to Figure 10.In addition, with thick dot-and-dash line remarked pixel electrode 52, represent common electrode 60 with thick solid line among the figure such as Fig. 9 among the figure such as Fig. 8, represent black matrix 62 with blacking among Figure 10, the kind of described line and blacking are with so that diagram is easier to understanding.
In liquid crystal panel 30F, with above-mentioned liquid crystal panel 30T with Specifications ground, the pixel arrangement zone 46B that disposes the pixel arrangement zone 46B of two pixel TFT 70 and do not dispose pixel TFT 70 alternately arranges mutually.The pixel electrode 52 that is connected in the pixel TFT 70 of a side (left side among the figure) is that integral body is arranged in the pixel arrangement zone 46B that disposes above-mentioned two pixel TFT 70.The pixel electrode 52 that is connected in the pixel TFT 70 of opposite side (right side among the figure) is across the drain electrode distribution 46 that is connected with this pixel TFT 70, and is dispersed throughout the two pixel arrangement zones 46B of adjacency and disposes.
In the illustration of Fig. 7 to Figure 10, the semiconductor layer 36 that pixel P1, P2 use is shapes (among the figure, the semiconductor layer 36 that pixel P1 uses is to be arranged to class U font with the form of counter-rotating up and down) of being arranged to class U font in mutual reverse mode.At this moment, the source electrode of the pixel TFT 70 that pixel P1 uses and drain electrode are arranged on a side of grid distribution 40, and the source electrode of the pixel TFT 70 that pixel P2 uses and drain electrode are arranged on the opposite side with respect to grid distribution 40.Moreover this configuration of pixel TFT 70 is also applicable to above-mentioned liquid crystal panel 32T.On the contrary, about liquid crystal panel 32T, the above-mentioned configuration of illustrative pixel TFT 70 (with reference to Fig. 3 and Fig. 4) is also applicable to liquid crystal panel 32F.
Common electrode 60 is to be overlapped in pixel electrode 52 and to be arranged on each pixel arrangement zone 46B.It among the figure situation that illustration is arranged on common electrode 60 each pixel arrangement zone 46B.Include pixel electrode 52 respectively at each pixel P1, P2, reach the common electrode 60 that is provided with by this pixel electrode 52 and FFS dielectric film 58, keep electric capacity to constitute.Also can be at a plurality of pixel P1, the P2 of adjacency, in addition all pixel P1, P2 common common electrode is set, can not be provided with common electrode distribution 54 and common electrode with repeater electrode 56 at each pixel P1, P2 this moment yet.
Black matrix 62 is to be provided with Specifications ground with the situation of above-mentioned liquid crystal panel 30T.Be illustration among the figure, black matrix 62 does not overlap with two pixel TFT 70 that are arranged in the 46B of pixel arrangement zone, and two peristome 62P1,62P1 are identical shaped and big or small situation.
About liquid crystal panel 30F, when pixel TFT 70 was called pixel components portion, the pixel components portion that pixel P2 uses was the pixel components portion that uses with pixel P1, together was arranged on the pixel arrangement zone 46B that disposes pixel P1.Therefore, with above-mentioned liquid crystal panel 30T similarly, the brightness of liquid crystal panel integral body is reduced, can carry out colourity adjustment etc.Perhaps, compare, also can promote the brightness of liquid crystal panel integral body with existing colourity method of adjustment.
Moreover above-mentioned is that illustration pixel components portion comprises pixel TFT 70 and situation about constituting and comprise the situation that keeps electric capacity 72 and constitute.When pixel was provided with other assembly, this other assembly also can be included in the pixel components portion that moves to pixel adjacent configuring area 46B.
And above-mentioned is the structure of illustration when being equivalent to pixel TFT 70 and between the source electrode of semiconductor layer 36 and drain electrode two gate electrodes being set.Pixel TFT 70 also can be used general TFT, and promptly grid distribution 42 intersects the TFT of formation once with semiconductor layer 36 between source electrode and drain electrode.Moreover, also can use other switch module, for example MIM (Metal Insulator Metal metal dielectric layer metal) assembly, replace pixel TFT 70.In addition, use TFT to be also referred to as the TFT substrate as the array substrate of above-mentioned switch module.
Moreover, though above-mentioned be that illustration liquid crystal panel 30T, 30F carry out the situation that the colour of 4 looks of red (R), green (G), blue (B) and blue or green (C) shows, be not to be defined in described color, and show that the quantity of look is not to be defined in 4 looks.
Moreover, when constituting 1 pixel with the painted areas of 4 looks, can be in the visible region (380 to 780nm) that form and aspect change with wavelength, by blueness be painted areas, the red colour system form and aspect of form and aspect painted areas, and from blueness to yellow form and aspect the painted areas of two kinds of form and aspect selecting constitute this pixel jointly.Here be to use above-mentioned colour system, but for example for blueness not is the form and aspect that are defined as pure blueness when being, also comprise royal purple or bluish-green etc.If the form and aspect of red colour system then are not to be defined as redness, also comprise orange.In addition, the dyed layer (color filter) that described painted areas also can be single constitutes, and the dyed layer of the multiple different form and aspect that also can overlap constitutes.Moreover though these painted areas are to illustrate with form and aspect, these form and aspect suitably change chroma, brightness and setpoint color and obtain.
With regard to the scope of concrete form and aspect, blueness is that the painted areas of form and aspect is that royal purple is extremely bluish-green, is more preferred from mazarine to blue.The painted areas of red colour system form and aspect is that orange is to red.A side painted areas of selecting from blueness to yellow form and aspect is a blue to green, is more preferred from blue or green to green.By blueness to the yellow selected opposite side painted areas of form and aspect is green to orange, is more preferred from green extremely yellow or green to yellow green.
Here, each painted areas might not be used identical form and aspect.For example, the form and aspect of green system are used by blueness during to selected two painted areas of yellow form and aspect, with respect to the green system of a side, opposite side uses the form and aspect of blue system or yellowish green colour system.
Thus, can realize color reproduction than existing RGB painted areas wider scope.
More than being the color reproduction that wide scope is described with form and aspect, below is to illustrate with the wavelength that penetrates painted areas.
The painted areas of blue system is that the peak value of wavelength is positioned at 415 to 500nm painted areas, is more preferred to be positioned at 435 to 485nm painted areas.The painted areas of red colour system is that the peak value of wavelength is positioned at the above painted areas of 600nm, is more preferred to be positioned at the above painted areas of 605nm.In blueness painted areas of a selected side to the yellow form and aspect is that the peak value of wavelength is positioned at 485 to 535nm painted areas, is more preferred to be positioned at 495 to 520nm painted areas.In blueness painted areas of selected opposite side to the yellow form and aspect is that the peak value of wavelength is positioned at 500 to 590nm painted areas, is more preferred to be positioned at 510 to 585nm painted areas, or is positioned at 530 to 565nm painted areas.
Then, show with x, y chromatic diagram.The painted areas of blue system is the painted areas that is positioned at x ≦ 0.151, y ≦ 0.056, is more preferred from the painted areas of 0.134 ≦ x ≦ 0.151,0.034 ≦ y ≦ 0.056.The painted areas of red colour system is the painted areas that is positioned at 0.643 ≦ x, y ≦ 0.333, is more preferred from the painted areas of 0.643 ≦ x ≦ 0.690,0.299 ≦ y ≦ 0.333.The painted areas of a selected side is the painted areas that is positioned at x ≦ 0.164,0.453 ≦ y in the extremely yellow form and aspect of blueness, is more preferred from the painted areas of 0.098 ≦ x ≦ 0.164,0.453 ≦ y ≦ 0.759.The painted areas of selected opposite side is the painted areas that is positioned at 0.257 ≦ x, 0.606 ≦ y in the extremely yellow form and aspect of blueness, is more preferred from the painted areas of 0.257 ≦ x ≦ 0.357,0.606 ≦ y ≦ 0.670.
Also can use LED (LightEmitting Diode light emitting diode), fluorescent tube, organic EL (Electro Luminescence electroluminescence) to be used as each light source of RGB to liquid crystal panel 30T, 30F irradiation back light unit backlight.Or also can use white light source.In addition, the white light source that also produced of white light source by blue-light emitting body and YAG fluorophor (yttrium, aluminium, garnet are fluorophor).
The rgb light source is preferably following person.That is, the light source of B is that peak value with the wavelength person that is positioned in 435nm to 485nm is for good.The light source of G is that the person that is positioned in 520nm to 545nm of the peak value with wavelength is for good.The light source of R is that the person that is positioned in 610nm to 650nm of the peak value with wavelength is for good.
And, need only wavelength according to the rgb light source, suitably select above-mentioned color filter, can obtain the color reproduction of wider scope.
Moreover the peak value that also can use wavelength for example is the light source with multi-peak of 450nm and 565nm.
In addition, the example that constitutes with the painted areas of above-mentioned 4 looks, below can enumerate: form and aspect are painted areas red, blue, green, blue or green (cyan), form and aspect are red, blue, green, yellow painted areas, form and aspect are the painted areas of redness, blueness, bottle green, yellow, form and aspect are the painted areas of redness, blueness, emerald green (emerald), yellow, form and aspect are redness, blueness, bottle green, yellowish green painted areas, or form and aspect are redness, green grass or young crops, bottle green, yellowish green painted areas.